ES410120A1 - Static inverter - Google Patents

Static inverter

Info

Publication number
ES410120A1
ES410120A1 ES410120A ES410120A ES410120A1 ES 410120 A1 ES410120 A1 ES 410120A1 ES 410120 A ES410120 A ES 410120A ES 410120 A ES410120 A ES 410120A ES 410120 A1 ES410120 A1 ES 410120A1
Authority
ES
Spain
Prior art keywords
thyristors
inverter
current
short circuit
oscillating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES410120A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Compagnia Italiana Westinghouse Freni e Segnali
Italiana Westinghouse Freni e Segnali SpA
Original Assignee
Compagnia Italiana Westinghouse Freni e Segnali
Italiana Westinghouse Freni e Segnali SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Compagnia Italiana Westinghouse Freni e Segnali, Italiana Westinghouse Freni e Segnali SpA filed Critical Compagnia Italiana Westinghouse Freni e Segnali
Publication of ES410120A1 publication Critical patent/ES410120A1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
    • H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
    • H02H7/122—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. DC/AC converters
    • H02H7/1227—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. DC/AC converters responsive to abnormalities in the output circuit, e.g. short circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)

Abstract

A static inverter system for high power applications providing built-in protection against short circuits appearing in either the inverter or the load. Thyristors arranged in a common bridge network of the inverter have their firing signals terminated when strategically located current sensors indicate, by means of a threshold circuit, that a short circuit has developed, in response to which an oscillating circuit produces a free oscillation of current to reverse bias of the thyristors during a semi-period of the oscillating cycle, thereby terminating current conduction by the thyristors for a duration sufficient to allow the thyristors to regain their normal resistance to forward conduction. In the non-conducting condition, the thyristors block current flow in the inverter system and accordingly protect the inverter components, as well as the thyristors themselves from damage due to excessive levels of current. The system further includes means for periodically restoring the thyristor firing circuitry to provide for automatic resumption of normal inverter operation in the event the short circuit condition is only transient. If the short circuit condition still exists after a predetermined number of such restorations, the thyristor firing signals are permanently extinguished until the fault is corrected and the system is manually reset.
ES410120A 1971-12-29 1972-12-28 Static inverter Expired ES410120A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT71265/71A IT951722B (en) 1971-12-29 1971-12-29 STATIC INVERTER FOR HIGH POWER WITH INTRINSICALLY PROTECTED FROM SHORT CIRCUITS

Publications (1)

Publication Number Publication Date
ES410120A1 true ES410120A1 (en) 1976-04-01

Family

ID=11314741

Family Applications (1)

Application Number Title Priority Date Filing Date
ES410120A Expired ES410120A1 (en) 1971-12-29 1972-12-28 Static inverter

Country Status (8)

Country Link
US (1) US3760258A (en)
AT (1) AT327324B (en)
BE (1) BE793379A (en)
CH (1) CH563684A5 (en)
DE (1) DE2238809C2 (en)
ES (1) ES410120A1 (en)
FR (1) FR2166116B1 (en)
IT (1) IT951722B (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3887860A (en) * 1972-11-15 1975-06-03 Eaton Corp Fuseless inverter
US3939392A (en) * 1973-12-22 1976-02-17 C.A.V. Limited Inverters
US4027169A (en) * 1974-03-29 1977-05-31 Union Carbide Corporation High frequency power supply
US3953779A (en) * 1974-05-30 1976-04-27 Francisc Carol Schwarz Electronic control system for efficient transfer of power through resonant circuits
DE2541701C3 (en) * 1975-09-18 1978-04-20 Siemens Ag, 1000 Berlin Und 8000 Muenchen Device for the detection of commutation disturbances in an inverter
DE2632380C3 (en) * 1976-07-19 1982-09-09 Danfoss A/S, 6430 Nordborg Protection circuit arrangement for an inverter
US4068294A (en) * 1976-09-20 1978-01-10 General Electric Company Circuit for detecting a missed commutation in an inverter
DE2642240C2 (en) * 1976-09-20 1978-09-28 Siemens Ag, 1000 Berlin Und 8000 Muenchen Method and circuit arrangement for shutting down an inverter
US4041365A (en) * 1976-09-20 1977-08-09 General Electric Company Circuit for detecting a malfunction in an inverter
US4200830A (en) * 1977-08-10 1980-04-29 Esb Incorporated Series resonant battery charger and control therefor
CA1099339A (en) * 1978-04-13 1981-04-14 Canadian General Electric Company Limited Conduction through sensing and inverter protection system
JPS5928152B2 (en) * 1978-11-04 1984-07-11 ファナック株式会社 Protection device for motor drive inverter circuit
JPS5928151B2 (en) * 1978-11-04 1984-07-11 ファナック株式会社 Protection method for motor drive inverter circuit
IT1118548B (en) * 1979-04-04 1986-03-03 Wabco Westinghouse Spa Static converter with constant output for large input variations - has voltage assessment circuit shunting load to produce error control signal
JPS5963983A (en) * 1982-10-04 1984-04-11 Hitachi Ltd Controller for power converter
DE3505577A1 (en) * 1985-02-18 1986-08-21 Siemens AG, 1000 Berlin und 8000 München Electrical circuit for producing pulsed voltages for an ozone generator
US4719555A (en) * 1985-12-19 1988-01-12 Hitachi, Ltd. Electric power control apparatus with first and second fixed time intervals
DK172562B1 (en) * 1995-10-06 1999-01-18 Danfoss As Method of measuring fault currents in an inverter, as well as inverters with controlled semiconductor switches
DE19605834A1 (en) * 1996-02-16 1997-08-21 Siemens Ag Method for driving a DC motor and device for carrying out this method
JP4627165B2 (en) * 2004-09-02 2011-02-09 三菱電機株式会社 Power semiconductor device control circuit and control integrated circuit
JP2008054420A (en) * 2006-08-24 2008-03-06 Toyota Motor Corp Motor drive device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL143757B (en) * 1964-08-11 1974-10-15 Philips Nv DEVICE CONTAINS A VOLTAGE CONVERTER AND AN INPUT FILTER FOR THIS INVERTER
NL6600907A (en) * 1966-01-25 1967-07-26
US3569819A (en) * 1969-01-16 1971-03-09 Gen Electric Recovery system for short circuits through switching devices in power circuits
US3611043A (en) * 1970-07-16 1971-10-05 Gen Electric Protective circuit for static switch

Also Published As

Publication number Publication date
BE793379A (en) 1973-06-27
DE2238809C2 (en) 1982-11-18
US3760258A (en) 1973-09-18
ATA887772A (en) 1975-04-15
CH563684A5 (en) 1975-06-30
DE2238809A1 (en) 1973-07-05
AT327324B (en) 1976-01-26
FR2166116A1 (en) 1973-08-10
IT951722B (en) 1973-07-10
FR2166116B1 (en) 1977-12-30

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